orcad_orient.h

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright The KiCad Developers, see AUTHORS.txt for contributors.
 *
 * Based on the dsn2kicad reference implementation and on OrCAD file format
 * documentation from the OpenOrCadParser project (MIT licensed).
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your
 * option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */
 
 
#ifndef ORCAD_ORIENT_H_
#define ORCAD_ORIENT_H_
 
#include <cstdint>
 
#include <math/vector2d.h>
 

struct ORCAD_ORIENT_ENTRY
{
    int    angle;  
    char   mirror; 
    int8_t txSel;  
    int8_t tySel;  
    int8_t a;
    int8_t b;
    int8_t c;
    int8_t d;
};
 

inline constexpr ORCAD_ORIENT_ENTRY ORCAD_ORIENT_TABLE[8] = {
    { 0, 0, 0, 0, 1, 0, 0, 1 },    { 90, 0, 0, 1, 0, 1, -1, 0 },    { 180, 0, 1, 2, -1, 0, 0, -1 },
    { 270, 0, 2, 0, 0, -1, 1, 0 }, { 0, 'y', 1, 0, -1, 0, 0, 1 },   { 90, 'x', 0, 0, 0, 1, 1, 0 },
    { 0, 'x', 0, 2, 1, 0, 0, -1 }, { 270, 'x', 2, 1, 0, -1, -1, 0 }
};
 

inline int OrcadOrientOf( int aRotation, bool aMirror )
{
    return ( aRotation & 3 ) | ( aMirror ? 0x4 : 0 );
}
 
 
inline int OrcadOrientDim( int aSelector, int aWidth, int aHeight )
{
    return aSelector == 1 ? aWidth : aSelector == 2 ? aHeight : 0;
}
 

inline VECTOR2I OrcadOrientOffset( int aOrient, int aWidth, int aHeight )
{
    const ORCAD_ORIENT_ENTRY& e = ORCAD_ORIENT_TABLE[aOrient & 7];
    return VECTOR2I( OrcadOrientDim( e.txSel, aWidth, aHeight ), OrcadOrientDim( e.tySel, aWidth, aHeight ) );
}
 

inline VECTOR2I OrcadTransformPoint( int aOrient, int aWidth, int aHeight, int aBaseX, int aBaseY, int aPx, int aPy )
{
    const ORCAD_ORIENT_ENTRY& e = ORCAD_ORIENT_TABLE[aOrient & 7];
    VECTOR2I                  t = OrcadOrientOffset( aOrient, aWidth, aHeight );
 
    return VECTOR2I( aBaseX + t.x + e.a * aPx + e.b * aPy, aBaseY + t.y + e.c * aPx + e.d * aPy );
}
 
#endif // ORCAD_ORIENT_H_